function $(objID)
{ 
    return document.getElementById(objID);
};
function Offset(e)
{
    var t = e.offsetTop;
    var l = e.offsetLeft;
    var w = e.offsetWidth;
    var h = e.offsetHeight-2;
    while(e=e.offsetParent)
    {
        t+=e.offsetTop;
        l+=e.offsetLeft;
    }
    return {
        top : t,
        left : l,
        width : w,
        height : h
    }
} 
function simulateSelect() { with(this)
{
    this.IDs = [];
    this.name = this;
    this.readonly = true;
    this.height = 20;
    this.width = null;
    this.ctlStyle = "CtlSelect";
    this.selStyle = "selected";
    this.unselStyle = "unselected";
    this.elementPrefix = "e__";
    this.inputPrefix = "i__";
    this.containerPrefix = "c__";
    this.buttonPrefix = "b__";
    return this;
}};
simulateSelect.prototype.init = function(ctlSelIDs) { with(this)
{
    eval(name).append(ctlSelIDs);
    eval(name).simulates();
}};
simulateSelect.prototype.style = function() { with(this)
{
    ctlStyle = arguments[0];
    selStyle = arguments[1];
    unselStyle = arguments[2];
}};
simulateSelect.prototype.append = function(ctlSelIDs) { with(this)
{
    if( ctlSelIDs.indexOf(",")>0 )
    {
        var arrCtlSel = ctlSelIDs.split(",");
        for(var i=0; i<arrCtlSel.length; i++)
        {
            eval(name).IDs.push(arrCtlSel[i]);
        }
    }
    else
    {
        eval(name).IDs.push(ctlSelIDs);
    }
}};
simulateSelect.prototype.checkupOnMouseDown = function(e) { with(this)
{
    // here compatible mf.
    var el = e ? e.srcElement : e.target;
    if( el.id.indexOf(elementPrefix)>-1 ||
    el.id.indexOf(inputPrefix)>-1 ||
    el.id.indexOf(containerPrefix)>-1 ||
    el.id.indexOf(buttonPrefix)>-1 )
    {
        return;
    }
    else
    {
        for(var i=0; i<eval(name).IDs.length; i++)
        if( $(containerPrefix + IDs[i]) )
        $(containerPrefix + eval(name).IDs[i]).style.display = "none";
    }
}};
simulateSelect.prototype.simulates = function() { with(this)
{
    for(var i=0; i<IDs.length; i++)
    eval(name).simulate(IDs[i]);
}};
simulateSelect.prototype.simulate = function(ctlSelID) { with (this)
{
    var input;
    var button;
    var object;
    var offset;
    object = $(ctlSelID);
    offset = Offset(object);
    input = document.createElement("INPUT");
    button = document.createElement("BUTTON");
    button.setAttribute("id", buttonPrefix + ctlSelID);
    //button.value = "⊿";
    button.value = "6";
    button.style.fontFamily = "Webdings, Marlett";
    button.style.background = "";
    button.onclick = input.onclick = function()
    {
        this.blur();
        eval(name).expand(ctlSelID, offset);
    }
    input.onselectstart = function() { eval(name).expand(ctlSelID, offset); event.returnValue = false; };
    input.setAttribute("id", inputPrefix + ctlSelID);
    input.title = button.title = "click expand options";
    input.style.cursor = button.style.cursor = "default";
    input.className = button.className = ctlStyle;
    input.style.width = (width>0 ? width : object.offsetWidth);
    height ? input.style.height=button.style.height=height : "";
    input.value = object[0].text;
    if( readonly==true ) input.readOnly=true;
    // this method is only IE.
    object.insertAdjacentElement("afterEnd",button);
    object.insertAdjacentElement("afterEnd",input);
    object.style.display = 'none';
}};
simulateSelect.prototype.expand = function(ctlSelID, offset) { with(this)
{
    var div, btn_off;
    var object = $(ctlSelID);
    if( !$(containerPrefix + ctlSelID) )
    {
        div = document.createElement("DIV");
        div.style.position = "absolute";
        div.style.display = "block";
        div.setAttribute("id", containerPrefix + ctlSelID);
        div.className = ctlStyle;
        div.style.left = offset.left;
        div.style.top = offset.top + offset.height;
        div.style.width = (width ? width : offset.width) + 20;
        div.style.height = offset.height;
        document.body.appendChild(div);
        for(var i=0; i<object.length; i++)
        {
            div = document.createElement("DIV");
            div.setAttribute("id", div.id = elementPrefix + ctlSelID + i);
            div.style.cursor = "default";
            if( object[i].text==$(inputPrefix + ctlSelID).value )
            div.className = selStyle;
            else
            div.className = unselStyle;
            div.innerText = div.title = object[i].text;
            div.style.height = height;
            div.setAttribute("value", object[i].value);
            div.onmouseover = function()
            {
                for(var j=0; j<$(containerPrefix + ctlSelID).childNodes.length; j++)
                {
                    if($(containerPrefix + ctlSelID).childNodes[j]==this)
                    $(containerPrefix + ctlSelID).childNodes[j].className = selStyle;
                    else
                    $(containerPrefix + ctlSelID).childNodes[j].className = unselStyle;
                }
            };
            div.onclick = function()
            {
                $(inputPrefix + ctlSelID).value = this.innerText;
                $(containerPrefix + ctlSelID).style.display = "none";
            };
            $(containerPrefix + ctlSelID).appendChild(div);
        }
        return;
    }
    if( $(containerPrefix + ctlSelID).style.display=="none" )
    {
        for(var i=0; i<object.length; i++)
        {
            if( object[i].text==$(inputPrefix + ctlSelID).value )
            $(elementPrefix + ctlSelID + i).className = selStyle;
            else
            $(elementPrefix + ctlSelID + i).className = unselStyle;
        }
        $(containerPrefix + ctlSelID).style.display="block";
        return;
    }
    if( $(containerPrefix + ctlSelID).style.display=="block" )
    {
        $(containerPrefix + ctlSelID).style.display="none";
        return;
    }
}};
simulateSelect.prototype.addEvent = function(w, h) { with(this)
{
}};